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[TW]Fox · 9 May 2012 at 18:23

So how much it matters is down to how prestigous the car is?

What about an Aston Martin? Does it matter more then? Or a Noble?

I think how much it matters depends on the recommendations of the people who designed an engine. Todays 'old Ford engine' was yesterdays 'cutting edge' engine, it doesn't wake up one day and think 'I'm 10 years old, actually mineral oil is fine'.

Dr Who · 9 May 2012 at 18:24

[TW]Fox;21875960 said:
So basically oil choice doesn't matter unless you have a Lambo?

Changing the oil regularly is far more important than the brand tbh.

As long as you have the correct viscosity and API rating,m the brand is pretty insignificant.

Been using Halfords full synth for years and never had a problem with it, tyre snobbery I can nderstand, but oil snobbery, well, it really is a non issue for the most part.

Dr Who · 9 May 2012 at 18:25

[TW]Fox;21875983 said:
'I'm 10 years old, actually mineral oil is fine'.

Well, mineral was probably alright from day 1.

OpenToSuggestions · 9 May 2012 at 18:26

[TW]Fox;21875983 said:
So how much it matters is down to how prestigous the car is?

What about an Aston Martin? Does it matter more then? Or a Noble?

I think how much it matters depends on the recommendations of the people who designed an engine. Todays 'old Ford engine' was yesterdays 'cutting edge' engine, it doesn't wake up one day and think 'I'm 10 years old, actually mineral oil is fine'.

You miss the point.
Putting in half Halfords 10W/40 semi and half Castrol 10W/40 semi doesn't matter. Mixing different grades does.
I do think you talk a lot of sense in a lot of areas but sometimes you do come out with some rubbish.

My point is that it is a 30hp tuned-up 2.5 litre Ford engine. Stick any old brand in it, provided it is the right grade. It really does not matter, it is a Mondeo.

[TW]Fox · 9 May 2012 at 18:28

OpenToSuggestions said:
You miss the point.
Putting in half Halfords 10W/40 semi and half Castrol 10W/40 semi doesn't matter. Mixing different grades does.

Ok.

I do think you talk a lot of sense in a lot of areas but sometimes you do come out with some rubbish.

But you don't?

Confirm for me again - mixing grades is bad, right?

OpenToSuggestions · 9 May 2012 at 18:29

[TW]Fox;21876029 said:
Confirm for me again - mixing grades is bad, right?

Yes. I did not say to do that though. You seem to comment on things that were never said.

lemonade · 9 May 2012 at 18:31

To add more fuel to the fire, I'd disagree with brand being irrelevant. The engine in mine was far more happy with Motul then generic Halfords.

[TW]Fox · 9 May 2012 at 18:31

OpenToSuggestions said:
Yes. I did not say to do that though. You seem to comment on things that were never said.

I'm just trying to clarify your thoughts - you think that it doesn't really matter what brand of oil you use as long as it's the same grade, and that mixing grades is bad but brand unimportant?

Whereas I think that it's manufacturers spec thats most important to meet.

As a result, you think I'm talking rubbish. Is that about where we are?

Simon · 9 May 2012 at 18:33

Ford reccomend 913B oil. This meets Fords requirement for their engines.

Mixing oils should be no issue. But you will lose performance of the better oil

aproctor · 9 May 2012 at 19:57

lemonade said:
To add more fuel to the fire, I'd disagree with brand being irrelevant. The engine in mine was far more happy with Motul then generic Halfords.

Unless you do an oil analysis you will never know which is better.

Housey · 9 May 2012 at 20:07

Use Olive oil, that's good for you I read so cars will like it too.

Brookert · 9 May 2012 at 20:20

I use snake oil, was told it was the best thing since sliced bread.......

Liampope · 9 May 2012 at 20:25

Firestar_3x said:
Explain to me the difference between Halfords own brand 5w30 and Castrol Edge 5w30.

Nothing that will make any difference at all to an old Mondeo engine for one oil change.

DAnDan · 9 May 2012 at 20:29

Liampope said:
Nothing that will make any difference at all to an old Mondeo engine for one oil change.

Have you ever worked in a lab, doing analysis and development of engine oils? :confused:

[TW]Fox · 9 May 2012 at 20:34

Liampope said:
Nothing that will make any difference at all to an old Mondeo engine for one oil change.

I dont get the constant reference to the fact its an 'old' Mondeo. Does an engine require less care about oil choice as it ages or something?

Jonnycoupe · 9 May 2012 at 20:43

Just say Noble again, same engine

Liampope · 9 May 2012 at 20:44

DAnDan said:
Have you ever worked in a lab, doing analysis and development of engine oils?

Well since you ask, at my old job I was working on a multi-partner research project looking at nano particle additives to motor oil as a friction/wear modifier.

[TW]Fox;21877252 said:
I dont get the constant reference to the fact its an 'old' Mondeo. Does an engine require less care about oil choice as it ages or something?

OK, just Mondeo will do

The old is not really a factor - it's still a modern engine. And you're right, of course oil choice and following manufacturers recommendations is important. But I bet you 50p the ST200 owners manual doesn't say 'do not use Halfords own brand oil'. This mix proposed in the OP, if they are the same type and grade of oil is a total non-issue.

Simon · 9 May 2012 at 20:46

Liampope said:
Well since you ask, at my old job I was working on a multi-partner research project looking at nano particle additives to motor oil as a friction/wear modifier.

Aka soot, otherwise known as burnt diesel

DAnDan · 9 May 2012 at 20:46

Liampope said:
OK, just Mondeo will do The old is not really a factor - it's still a modern engine. And you're right, of course oil choice and following manufacturers recommendations is important. But I bet you 50p the ST200 owners manual doesn't say 'do not use Halfords own brand oil'. This mix proposed in the OP, if they are the same type and grade of oil is a total non-issue.

I think the part that people have issue with is saying that it will make no difference at all. Yes they'll both likely be fine, as will mixing them, but to say there's no difference whatsoever is just silly.

Simon · 9 May 2012 at 21:07

I assume this oil is Castrol Magnatec 5W-30 A5/B5?